nohz: Convert a few places to use local per cpu accesses

A few functions use remote per CPU access APIs when they
deal with local values.

Just do the right conversion to improve performance, code
readability and debug checks.

While at it, lets extend some of these function names with *_this_cpu()
suffix in order to display their purpose more clearly.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 1 insertions, 3 deletions

diff --git a/kernel/softirq.c b/kernel/softirq.c
index 11025ccc06dd..11348de09400 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -311,8 +311,6 @@ asmlinkage void do_softirq(void)
  */
 void irq_enter(void)
 {
-        int cpu = smp_processor_id();
-
         rcu_irq_enter();
         if (is_idle_task(current) && !in_interrupt()) {
                 /*
@@ -320,7 +318,7 @@ void irq_enter(void)
                  * here, as softirq will be serviced on return from interrupt.
                  */
                 local_bh_disable();
-                tick_check_idle(cpu);
+                tick_check_idle();
                 _local_bh_enable();
         }